Inking apparatus for printing-presses.



PATBNTBD MAY 1, 190e.

, J. A. NOEL. INKING APPARATUS POR PRINTING PRESSES.

APPLICATION-FILED SEPT. 15, 1905.

2 SHEETS-SHEET 1.

IIII

Il iN INI vm UNITEDy sTATEs PATENT OEEIOE.

INKING APPARATUS FOR PRINTING-PRESSES.

Specicaton of Letters Patent.

Patented May 1, 1906.

Application filed September 15. 1905. Serial No. 278,645.

To LZZ whom it may concern: l

Be it known that I, JOHN A. NOEL, a citizen of the United States, residing at Washington, in the District of Columbia, have invented certain new and useful Improvements in Inking Apparatus for Printing-Presses, of which the'following is a specification.

My invention relates to mechanism for controlling the movement of the inking apparatus of a printin -press.

The. object o my invention is to produce a simple and efficient mechanism whereby the relation between the number of partial rotative movements of the fountain-roller and the number of reciprocations of the bed may be varied at the will of the pressman. In other Words, through the agency of my invention it is possible to obtain a partial rotation of the fountain-roller for every single reciprooatincr movement ofthe bed or a partial rotation of the fountain-roller for a plurality of reciprocations of the bed.

In printing-presses as now constructed the amount of movement which is automatically imparted to the fountain-roller cannot be reduced suiiiciently for all kinds of work which may be performed upon the press. These presses are so constructed that a single reciprocating movement of the bed may operate the pawl-and-ratchet mechanism, which turns the fountain-roller the space of one Jtooth or of several, but cannot operate it less than the space of one tooth; but the amount of movement imparted to the roller by one reciprocation of the bed moving the roller the space of one tooth of the ratchet-wheel gives an amount of movement to the fountainroller which supplies an amount of ink in excess of that required for manykinds of work which the press is capable of doing. For this reason a smaller press must be used for printing smaller papers, which could as well be printed upon the larger but for this excessive supply of ink. In some cases the pressman attempts to modify this excessive supply by allowing the fountain-roller to feed for a certain length of time and then cutting ofi the supply by disconnecting the roller from its operating mechanism, the form being supplied with ink during this interval from the quantity left upon the distributing and form rollers. As soon as the work begins to get light from an insufficient supply of ink the fountain-roller is again connected until the rollers are againV sup lied, and so on. `This course is very objectionable, as the operator is compelled to keep a constant watch upon the work being done, and in spite of`all his cae the work will assume different shades of co or.

The object of my invention is to overcome' these difliculties and to reduce the supply of ink to any desired degree by reducing th movement of the fountain-roller.

The primary movement from which the varied feed of the ink-fountain roller is to be derived is always the same; and my invention consists of a mechanism whereby the pawl of the ordinary mechanism is held out of engagement with its ratchet during any desired number of reciprocations ofthe bed and is forced into enga ement with its ratchetwheel intermitting y with said reciprocations.

The means which I havedevised for carrying out my invention I have shown inthe accompanying drawings, in which- Figure l shows in perspective a part of the link-fountain with its roller, the oscillating toothed segment operated by the reciprocating bed, and the intermediate mechanism for communicating motion to the fountainroller; Fig. 2, a vertical section of the intermediate mechanism for communicatin motion to the fountain-roller, together wit the operating-pawl and itsratchet; Fig. 3, apart1al front elevation of the cylinder which controls the intermittent engagement of the Operating-pawl With its ratchet; 4, a view similar to Fig. 2, showing a modi ed form of the intermediate mechanism.

The mainparts (shown in Fig. 1) are of wellknown 'construction and represent part of a I-Ioe press in which the fountain-roller 1 is moved by means of a pawl 2, which engages with a ratchet-wheel 3, keyed upon the shaft 4 of the roller. The pawl is carried upon an arm 5 of the sleeve 6, loose u on the shaft 7 and having teeth in mesh Wit a segment 8, pivoted upon a shaft 9 and operated by the reciprocating bar 10, which is moved in the usual manner by the incline on the side ofthe reciprocatin bed.

As hereto ore constructed the only reduction of movement Of which the machine was capable was effected by limiting the action of the pawi on the teeth of the ratchet-wheel fixed to thegfountain-roller. This reduction was limited: to the movement of a single tooth at each reciprocation of the bed. Any further reduction would stop the working of the inking apparatus.

Carried by the arm 5 of the sleeve 6 IOO IIO

through the agency ofthe bolt 11 are the uprights or standards 12 and 13. A shaft 14 connects the standards 12 and 13, and a cylinder formed of a series of disks a a a2 a3, &c., is rotatably mounted on said shaft. The number of disks composing said cylinder may be.varied to suit the conditions to which a press of a certain type is designed to be subjected. The disks a a a2 a3 are adapted to rotate in unison and are actuated through the medium of the pawl 15, carried by the lever 16, said pawl engaging the teeth of the disk a and rotating said disk the distance of one tooth for every reciprocation of the bed as a result of the oscillation of the arm 5, which carries the standards 12 and 13, and the consequent intermittent engagement of the pawl-supporting lever 16 with the iiXed stop 17. The disk a has a less number of teeth than disk aJ and the disk a2 a less number of teeth than disk a', and so on. The relative proportion between the number of teeth of the disks may be varied to suit conditions. As shown, however, the number of teeth on disk ais forty-eight and on each succeeding disk to the left is twenty-four, eighteen, twelve, eight, six, four, three, two, and one, respectively. A bar 18 has its ends movably mounted in the grooves 19 and 20 in the standards 12 and 13, and springs 21 and 22 constantly tend to press said bar to the top of the grooves. Longitudinally adjustable on said bar is a link provided with a handle 23, an upward projection 24, carrying a roller 25, which constantly contacts with one of the disks of the cylinder, and a downwardly-projecting toe 26, which constantly engages the upper surface of the pawl 2, said pawl being held upward out of engagement with its ratchet 3 and in engagement with the toe 26 through the medium of the spring 28. The bar 18 is graduated or scaled, so that the link may be adjusted along the bar beneath any desired disk of the cylinder with despatch and precision. If it is desired to move the fountain-rollerthe distance of one tooth of the ratchet 3 with every reciprocation of the bed, a disk with the same number of teeth as the disk a can be provided. It will be apparent that if the projection 25 of the link is adjusted directly beneath the disk a one movement of the apparatus will be ineffective to turn the fountain-roller; but the second movement will cause the pawl 2 to engage the ratchet 3 and turn the ratchet 3 and in turn the roller 1 the distance of one tooth, giving one-halt1 the amount of ink-feed which would be. given by the lowest gage of the machine as heretofore constructed. A Jfurther reduction of the ink-feed can be had by adjusting the projection 25 of the link to the left on the rod 18 directly beneath a disk having a less number of teeth than the disk a. This reduction may be continued at will according to the character of the work.

In the modification shown in Fig. 4 all the disks except disk a are provided with recesses b instead of teeth, each successive disk from left to right having a less number of recesses than the preceding one. These recesses are adapted to receive the projection 25 of the link when in line, the constant tendency of said projection being to move upward as a re' sult of the influence of the springs21 and 22 on the bar 1S. When this upward movement of the projection 25 takes place, pressure on the heel 3() of pawl 2 by the secondary link 31 is relieved, the pawl is moved into engagement with ratchet 3 by spring 28, and the neXt movement of the apparatus Will move the fountain-roller the distance of one tooth of the ratchet 3.

I have described my invention so that one skilled in the art may make it; but I do not limit myself to the details of construction, which may obviously be varied without departing from the scope of the invention.

I claim- 1. In combination with the fountain-roller of a printing-press and with its pawl-andratchet wheel, an arm supporting said pawl and complete means carried by said arm whereby the pawl is brought into engagement with the ratchet-Wheel at intervals.

2. In combination with the fountain-roller of a printing-press and with its pawl-andratchet wheel, an arm supporting said pawl and complete means carried by said arm for controlling the intermittent engagement of the pawl and ratchet.

3. In combination with the fountain-roller of a printing-press and with its pawl-andratchet wheel, an arm supporting said pawl, a rotatable member carried by said arm and means interposed between the pawl and member and actuated by the rotation of said member for controlling the intermittent engagement of the pawl and ratchet.

4. In combination with the fountain-roller of a printing-press and with its pawl-andratchet wheel, an arm supporting said pawl, a rotatable member carried by said arm and means interposed between said pawl and member for controlling the intermittent engagement of the pawl and ratchet.

5. In combination with the fountain-roller of a printing-press and with its pawl-and ratchet wheel, an arm supporting said pawl,

a rotatable member carried by Said arm and means interposed between the pawl and member and actuated by the rotation of said member whereby said pawl is brought into engagement with the ratchet-wheel at interva s.

6. In combination with the fountain-roller of a printing-press and with its pawl-andratchet wheel of a rotatable member having a bearing independent of the fountain-roller adapted by its rotation to control the intermittent engagement ofthe pawl and ratchet.

IOO

7. n combination with the fountain-roller of a printin -press and With its paWl-andratchet Whee of a rotatable member having a bearing independent of the fountain-roller and means interposed between the paWl and member and actuated by the rotation of said member for controlling the intermittent engagement of the paWl and ratchet.

8. In combination With the fountain-roller of a printing-press and with its paWl-andratchet Whee a spring normally holding said paWl out of engagement With its ratchet- Wheel and means for varying the interval of time between the engagements of the paWl With its ratchet-Wheel.

In testimony whereof I affix my signature in presence of tWo Witnesses.

JOHN A. NOEL.

Witnesses:

HENRY T. BRIGHT, HENRY E. GLoTzBAcH. 

